★★ 建议用时：

　　15分钟

　　Most kinds of rose plants come from Asia.But roses are also__1__to other areas including northwest Africa，Europe and the United States.

　　In 1986，Congress__2__the rose as America's national flower.Technically， Congress and President Ronald Reagan __3__ it the “national floral emblem(象征)”．Whatever the name，the decision did not smell__4__ to supporters of other popular flowers.

　　Some people say roses are __5__to grow.But you have a good chance of__6__if you start with a few suggestions from __7__.You should plant your roses where they can get__8__for about six hours on bright days.

　　You can buy roses from a garden center or by mail__9__.You can buy potted(盆栽的)roses，also known as container roses，or bareroot plants.Each kind has its fans.

　　Some gardeners say potted roses are easier to plant.They say the roots__10__better.But Jeffrey Dinslage，president of Nature Hills Nursery，__11__that bareroot roses come without soil.So they __12__less to transport.

　　Jeffrey advises getting bareroot roses as close to__13__time as you can.If they arrive __14__you are ready to plant them，make sure the packing material is moist(潮湿的)．Keep the plants in a__15__，dark place.You plant the roses while they are dormant(休眠的)．The resting plants have no__16__but still need water.

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